<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .f{
            /* height: 50px; */
            background: rgb(255, 255, 255);
            border-style:solid none;
            border-top-width: 5px;
            border-top-color: orange;
            border-bottom-width: 1px;
            border-bottom-color: rgb(172, 172, 172);
        }
        .s1{
            display: inline-block;
            background: #ffffff;
            width: 100px;
            height: 49px;
        }
        .s2{
            display: inline-block;
            background: #ffffff;
            width: 100px;
            height: 49px;
        }
        .s3{
            display: inline-block;
            background: #ffffff;
            width: 100px;
            height: 49px;
        }
        .s4{
            display: inline-block;
            background: #ffffff;
            width: 100px;
            height: 49px;
        }
        .f>div:hover{
            background-color: #c0c0c0;
            color: #ff7b24;
        }
        .f div{
            text-align: center;
            line-height: 49px;
            text-decoration: none;
        }
        .f a{
            text-align: center;
            line-height: 49px;
            text-decoration: none;
            color: rgb(68, 68, 68);
        }
        .f a:hover{
            background-color: #c0c0c0;
            color: #ff7b24;
        }
    </style>
</head>
<body>
    <div class="f">
        <div class="s1"><a href="http://">新浪导航</a></div>
        <div class="s2"><a href="http://">新浪导航</a></div>
        <div class="s3"><a href="http://">新浪导航</a></div>
        <div class="s4"><a href="http://">新浪导航</a></div>
</body>
</html>